But most importantly, we can pass one argument to / and get back a function: let div42 = (/) 42 which is Int -> Int.

div42 7 prints 6.0.

The flip function is (A -> (B -> C)) -> (B -> (A -> C)).

let (\\) = flip (/) is Int -> Int -> Int but with its arguments flipped.

(\\) 7 42 prints 6.0 and 7 \\ 42 prints 6.0.

let vid7 = (\\) 7 in vid7 42 prints 6.0.